Israel and Palestine - Turning a blind eye

When it comes to the whole Israel-Palestine thing, I have no objection to people arguing with supporters of Israel. I have no objection to people arguing with supporters of Palestine. But I don't get it when they rant at people who realise that there are 2 sides; that there is blame to be placed on both parties. I take issue with that people who are oblivious to the wrongs of the side they choose to support.